11513021647 has 2 divisors, whose sum is σ = 11513021648. Its totient is φ = 11513021646.

The previous prime is 11513021623. The next prime is 11513021651. The reversal of 11513021647 is 74612031511.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11513021647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11513021677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5756510823 + 5756510824.

It is an arithmetic number, because the mean of its divisors is an integer number (5756510824).

Almost surely, 2^11513021647 is an apocalyptic number.

11513021647 is a deficient number, since it is larger than the sum of its proper divisors (1).

11513021647 is an equidigital number, since it uses as much as digits as its factorization.

11513021647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 31.

The spelling of 11513021647 in words is "eleven billion, five hundred thirteen million, twenty-one thousand, six hundred forty-seven".